The minimum value of ` cos^(3) x+ cos^(3) (120^(@) + x) + cos^(3) (120^(@) -x)` is

The minimum value of cos(cos x)=

The minimum value of 2cos x-3cos^(2)x+5 is

Statement - I : Period of cos^(3) x + cos^(3) (120^(0) - x) + cos^(3) (120^(0) + x ) is (pi)/(3) Statement -II : Period of cos((2pi x)/ 3 ) + sin((pix)/2) - tan ((pi x )/ 4) is 12 Which of the above statement is correct.

The minimum value of 2 cos x - 3 cos^(2) x +5 is

The minimum value of cos x+cos y+cos(x+y) is

The minimum value of 3 sin^2x + 4 cos^(2) x is

Find the maximum value of cos^(3)x+cos^(3)(120-x)+cos^(3)(120+x)

The minimum of cos^(2)(120^(@) + x)+ cos^(2) (120^(@) -x) is

cos^(3) theta + cos^(3) ( 120^(@) +theta ) + cos^(3) (120^(@) - theta )=

The minimum value of 5 cos x+ 3 cos ((pi)/(3) + x) +8 is